Swine wastewater treatment using a unique sequence of ion exchange membranes and bioelectrochemical system

• Published in: Bioresource technology 2012-08, Vol.118, p.163-169
• Main Authors: Lim, Seung Joo, Park, Wooshin, Kim, Tak-Hyun, Shin, In Hwan
• Format: Article
• Language: English
• Subjects: Ammonia - analysis; Animals; Anion exchange; Batch Cell Culture Techniques; Biological; Biological Oxygen Demand Analysis; Bioreactors; Cation exchange; Cations; Electric potential; Electricity; Electrochemical Techniques - instrumentation; Electrochemical Techniques - methods; Fluxes; Hydrogen-Ion Concentration; Ion Exchange; Membranes, Artificial; Motion; Nitrification; Nitrogen; Nitrogen - analysis; Nitrogen - isolation & purification; nitrogen content; Nitrogen removal; Organic Chemicals - isolation & purification; Organic matter; Quaternary Ammonium Compounds - analysis; Swine; Swine wastewater; Voltage; Waste Disposal, Fluid; Waste water; wastewater; wastewater treatment; Water Purification - instrumentation; Water Purification - methods
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2012.05.021

► The flux via a cation exchange membrane played an important in ammonium removal. ► Electrochemical attraction enhanced ammonium transportation. ► Removal of organic matter and nitrogen was proportional to the applied voltage. An ion exchange biological reactor (IEBR) treated organic matter and nitrogen in swine wastewater at 23°C. The enhanced IEBR enhanced the ammonium flux by electrochemical attraction. The abiotic ammonium fluxes at the applied voltage of 0, 1, and 3V were 1.33, 1.79, and 2.73mg/m2/s, respectively. In the meantime, the ammonium fluxes caused by biological nitrification at the applied voltage of 0, 1, and 3V were 1.54, 2.07, and 3.59mg/m2/s, respectively. Removal of organic matter and nitrogen in swine wastewater was proportional to the applied voltage. The average SCOD removal efficiencies at the applied voltage of 0, 1, and 2V were 59.7%, 60.2%, and 67.0%, respectively. The average total nitrogen removal efficiencies at the applied voltage of 0, 1, and 2V were 39.8%, 49.5%, and 58.7%, respectively.